Home / 21,103.37-29,121.47-11,541.35

Finding the Fourth Proportional to 21,103.37, 29,121.47 and 11,541.35

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Solution

The fourth proportional to 21,103.37, 29,121.47 and 11,541.35 is: 15,926.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.37 : 29,121.47 = 11,541.35 : x
  2. Step 2: Convert to fraction form
    21,103.37/29,121.47 = 11,541.35/x
  3. Step 3: Cross multiply
    21,103.37x = 29,121.47 × 11,541.35
  4. Step 4: Simplify right side
    21,103.37x = 336,101,201.08
  5. Step 5: Solve for x
    x = 336,101,201.08/21,103.37
  6. Step 6: Final answer
    x = 15,926.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.